1. Department of Urology, New York University, New York, New York
2. Regional Cancer Centre and the Department of Surgical Sciences, Uppsala University, Uppsala University Hospital, Uppsala, Sweden
3. Department of Surgery, Urology Service, Memorial Sloan-Kettering Cancer Center, New York, New York
4. Department of Surgical and Perioperative Sciences, Urology and Andrology, Umeå University, Umeå, Sweden